HD-CAPC
CAPC
10⁻²–10⁻³ g/m²·day water transmission in a 325 µm transparent construction, with PID288 and DH2000 degradation under 2%.
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Water Barrier Layer
CPPC/HPPC
HD-CPPC / HD-HPPC
A dedicated water block layer inside the stack, high transmittance, and a 25-year service life.
Adding a moisture barrier to a backsheet usually means adding opacity, and in a bifacial or lightweight module that costs you rear-side generation. The two requirements pull against each other.
HD-CPPC and HD-HPPC resolve it by putting a discrete 12–15 µm water blocking layer inside an otherwise transparent construction, so the barrier performance arrives without the transmittance leaving.
Why this one
- Water resistance of 10⁻² to 10⁻³ g/m²·dayFrom a dedicated water block layer rather than from sheer PET thickness.
- High transmittanceIncreases module energy yield, which is the reason to choose a transparent backsheet in the first place.
- High weather resistanceEnsures a 25-year service life.
- Two constructionsHD-CPPC at 323 µm ±5% with a 10 µm UV cut-off air coating, and HD-HPPC at 332 µm ±5% with a heavier 22 µm air coating.
Specification
| Product Code | Product Type | HD-CPPC | HD-HPPC |
|---|---|---|---|
| Product Structure (HD-CPPC) | Air Coating: 10μm, Weather-Resistance, UV Cut-Off | ||
| Middle Layer: 288μm, Insulation Property, Water Vapor Barrier | |||
| Glue Layer: 8μm, Bonding | |||
| Water Block Layer: 15μm, Water Vapor Barrier | |||
| Inner Coating: 5μm, Great Bonding Performance with EVA | |||
| Product Code | HD-CPPC-T | HD-HPPC | |
| Product Name | High transmittance water blocking back sheet for crystalline silicon terrestrial photovoltaic (PV) modules | ||
| Thickness | Air Coating: 10±2μm Middle Layer: 288μm±5% Adhesive Layer: 8±2 μm Water Blocking Layer: 12±1 μm Inner Coating: 5 (-0, +2) μm Total Thickness: 323 μm±5% | Air Coating: 22±2μm Adhesive Layer: 8±2 μm Middle Layer: 275μm±5% Adhesive Layer: 8±2 μm Water Blocking Layer: 12±1 μm Inner Coating: 5 (-0, +2) μm Total Thickness: 332 μm±5% | |
| Color | Transparent | Transparent |
Values as published by the manufacturer. Tolerances and roll formats are confirmed in writing per order.
Storage and shelf life
High storage stability with no special storage requirements. Warranty period is one year under cool, dry storage conditions; laminating process generality should be evaluated after that period.
Applications
- Bifacial lightweight modules
- Balcony and portable modules
- Humid-climate distributed installations
Supplied from
Suzhou, Jiangsu, China — and PT. Hondol Material Indonesia, Batam, for customers served from Indonesia.
Questions about CPPC/HPPC
CPPC or HPPC?
HD-CPPC runs a 10 µm air coating in a 323 µm total; HD-HPPC runs a 22 µm air coating in a 332 µm total. The heavier outer coating is the choice where UV and abrasion exposure is more severe.
How is the water blocking layer built in?
As a discrete 12–15 µm layer bonded between the PET middle layer and the inner coating, with 8 µm adhesive layers on either side.
Is it suitable for glass modules too?
Yes. The transparent high-barrier backsheet in the encapsulation range shares the HD-CPPC-T construction and is specified for TOPCon, HJT and perovskite glass modules.
Related products
Same series first, then the rest of Lightweight PV Solutions.
C&I Distributed Lightweight Modules
Up to 23.0% deliverable efficiency in a module light enough for a roof that was surveyed as non-load-bearing.
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Automotive-Used PV Modules
−40°C to 150°C, continuous high-frequency vibration, 15 years or 250,000 km.
View specification →
Balcony Lightweight Modules
CTM over 95%, 5400 Pa mechanical load tested, hail tested — light enough for one person to hang on a railing.
View specification →Get CPPC/HPPC quoted against your own construction.
Send the module format, the annual volume and the destination market. The reply carries the price, the lead time and the certificate.